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Compute the head loss due to pipe friction and the power required to maintain flow in a circular pipe of 40 mm diameter and

Compute the head loss due to pipe friction and the power required to maintain flow in a circular pipe of 40 mm diameter and 750 m laid horizontal when water flows at a rate: (a) 4 litres per minute; (b) 30 litres per minute. Take dynamic viscosity of water equal to 1.14 x 10 N s m. Assume that for the pipe absolute roughness, k is 0.00008 m.

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